public override bool Equals(object obj)
        {
            SourcedFontFamilyItem sourcedFontFamilyItem = obj as SourcedFontFamilyItem;

            if (sourcedFontFamilyItem == null || !(this.FamilyName == sourcedFontFamilyItem.FamilyName))
            {
                return(false);
            }
            return(FontEmbedder.AreFontsEqual(this.FontFamilySource, sourcedFontFamilyItem.FontFamilySource, this.DocumentContext));
        }